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I just bought one. I had to read the directions on what the three lights mean. It is a dual voltage detector, but can be switched
to a high voltage only by the push of the button. You can also silence it, which I prefer. But, I have to silence it every time I turn it on...

I've never had a problem with the few Fluke noncontact voltage detectors ( and a milwaukee). I mainly use them to see if a wire is energized when troubleshooting. I never use it in any situation where i would be cutting or touching any of the leads/legs. I always double check with my DMM. I also always check the NCV detector on known lives wires before i even begin to use it.

Its just a device to do a quick check to see if there is any voltage present. Always use a DMM before preforming a repair or modifiying any electrical component or device. Also ALWAYS check the devices operation on a known live wire before using. Cheers

A coworker has one, I don't like it. Too many butttons to push (LOL), it beeps and flashes, I'm never sure what mode it's on or if it's on at all and I don't care to learn. I like my old Greenlee, turn the cap and it's on. Another that I use is a cheapie that just lights up red, doesn't turn on or off, and I don't even think you can replace the battery.

A coworker has one, I don't like it. Too many butttons to push (LOL), it beeps and flashes,

You're kidding, right? It is a single button to turn it on, and it only has 1 button. Even if you don't want to read that Blue is 24v mode, and green is higher than 50v mode, you just have to know that red is detecting, and any other color is "on".